Phosphorus in archeological ceramics as evidence of the use of pots for cooking food

Rodrigues, Suyanne Flavia Santos; Costa, Marcondes Lima da

doi:10.1016/j.clay.2015.10.038

Cited by 17 publications

(7 citation statements)

References 37 publications

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“…Phosphorous is not the main element in ceramic clays, but high contents of up to more than 10% P 2 O 5 are common in archeological pottery, and these contents are commonly interpreted as the effect of contamination. The sources of phosphorous can be the bones that are usually thrown away at archaeological excavations along with ceramics, food that was contained in the vessels during their use, or agricultural fertilizers (Fabbri & Gualtieri, 2013; Holliday & Gartner, 2007; Rodrigues & da Costa, 2016). Therefore, phosphorus was considered an outlier and removed from the dataset.…”

Section: Resultsmentioning

confidence: 99%

Formation of reference groups for archaeological pottery using neutron activation and multivariate statistical analyses

et al. 2022

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For the first time in Russia, instrumental neutron activation analysis (INAA) and related analytical techniques were used to determine the distribution patterns of elemental composition in archeological pottery in terms of classification and provenance of medieval pottery. A total of 48 fragments have been discovered in three locations; Bolgar, the Moscow Kremlin (MosKremlin), and Selitrennoe settlement (Selitrennoe). The assemblages were subjected to INAA in order to determine the concentrations of 37 elements in mg/kg. The data were analyzed using geochemical, bivariate, and multivariate statistical techniques. To classify the fragments according to their origin hierarchical clustering (HCA), linear discriminant (LDA), and principal component analyses (PCA) were used. Based on the INAA results, the first attempt was made to apply machine learning methods to the study of artifacts in Russia. The results show that they are reliable and powerful in extracting information about critical elements for identifying ceramic fragments and using them as chemical fingerprints. Chromium was the most useful element and was used in conjunction with other elements as a fingerprint to distinguish sherds. Chemical and statistical analyses help to establish of reference groups for medieval archeological pottery, which will be used in the future to classify and identify various unknown sherds. These reference groups serve as baseline data for determining

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Section: Resultsmentioning

confidence: 99%

Formation of reference groups for archaeological pottery using neutron activation and multivariate statistical analyses

et al. 2022

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“…More specifically, phosphorous and calcium were probably supplied by the cooked meat, and in particular by the bones, mineralogically composed by hydroxilapatite. The experimental work of Rodrigues and Costa [32] supports this interpretation, in their work on the effect of phosphorous incorporation in cooking pots, variscite, another hydrated aluminium phosphate (AlPO 4 •2H 2 O), crystallized after a long time of contact with an experimental solution containing 0.03 wt% P 2 O 5 and 0.03 wt% CaO (more than 600 h of cooking). Rodrigues and Costa experiments were performed using a solution and not real food, and the formed secondary phosphates were so abundant that could be observed by XRPD on the bulk [32].…”

Section: Resultsmentioning

confidence: 83%

Synchrotron tts-µXRD identification of secondary phases in ancient ceramics

et al. 2018

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The study of the alteration process, and in particular of secondary phases precipitated in pottery after its production, can constrain the post-depositional environments or the type of use of the pottery. Detailed study of secondary phases can be done using different approaches, based on microscopic, microstructural and microchemical analyses, as well as mineralogical methods. In the present study are reported the results of the application of punctual mineralogical analysis by synchrotron through-the-substrate microdiffraction (tts-μXRD) to analyse secondary phases precipitated in ancient pottery (Bronze Age pottery form Frattesina in Italy and Mesolithic pottery form Al Khiday in Sudan). Although the chemical composition of these secondary phases in many cases almost matches with the stoichiometric composition of a known mineral, only some of them were actually true mineral phases (i.e. with crystallinity and therefore showing diffraction peaks), while others were amorphous. Some phases, the occurrence of which was previously attested only on the basis of their chemical composition (determined by scanning electron microscope or the electron microprobe analysis), were univocally identified as true vivianite (Fe 3 (PO 4) 2 •8H 2 O) and crandallite (CaAl 3 (PO 4) 2 (OH) 5 •H 2 O) minerals. Part of the phases detected in studied pottery, the chemical composition of which was consistent with specific mineral phases, were instead amorphous. The synchrotron through-the-substrate microdiffraction (tts-μXRD), therefore, represents a valid method for properly determine the mineralogical nature of secondary phases in pottery, as well as other small-sized and rare mineral phases occurring in polycrystalline materials of archaeological interest, such as pottery, mortars, painting and glassy materials.

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“…Por exemplo, o estudo das características químicas e mineralógicas das cerâmicas propicia o conhecimento sobre as matériasprimas selecionadas para a fabricação das cerâmicas, seus usos, bem como a respeito do solo da época em que foram confeccionados, possibilitando a elaboração de hipóteses acerca do ambiente onde uma determinada cultura se desenvolveu. Além disso, os minerais encontrados nas amostras permitem a identificação da provável temperatura de queima das peças e a avaliação de características de performance dos objetos cerâmicos (Costa et al, 2004(Costa et al, , 2010Bernedo & Latini, 2013;Natalio et al, 2015;Rodrigues et al, 2015;Rodrigues & Costa, 2016).…”

Section: Os Valores Patrimoniais Das Cerâmicas Arqueológicasunclassified

A teoria contemporânea do restauro e as cerâmicas arqueológicas da Amazônia

Maia

Sanjad

Lima

2021

Bol. Mus. Para. Emílio Goeldi. Ciênc. hum.

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Resumo Este artigo apresenta uma discussão acerca das intervenções de conservação e restauro realizadas em cerâmicas arqueológicas, com ênfase no acervo do Museu Paraense Emílio Goeldi (MPEG), localizado em Belém, Pará, região Norte do Brasil. A pesquisa tem como principal objetivo a identificação dos tipos de restauro encontrados na reserva técnica do MPEG e a aplicabilidade da teoria contemporânea do restauro na intervenção da cerâmica arqueológica. Para o desenvolvimento da pesquisa, foram analisadas as principais teorias de restauro e políticas preservacionistas do Brasil. Em seguida, reconheceu-se os valores culturais das cerâmicas arqueológicas e seu significado para a sociedade civil. Por fim, foram analisadas as intervenções restaurativas identificadas no acervo do MPEG, de modo a discutir sua trajetória ao longo do tempo. Ademais, debate-se sobre as reflexões pré-intervenções necessárias, de modo a determinar a intenção da restauração e as técnicas ideais para a salvaguarda do bem cultural.

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Phosphorus in archeological ceramics as evidence of the use of pots for cooking food

Cited by 17 publications

References 37 publications

Formation of reference groups for archaeological pottery using neutron activation and multivariate statistical analyses

Formation of reference groups for archaeological pottery using neutron activation and multivariate statistical analyses

Synchrotron tts-µXRD identification of secondary phases in ancient ceramics

A teoria contemporânea do restauro e as cerâmicas arqueológicas da Amazônia

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